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平行四边形面积等于矩形面积
Author:
吕胜
GeoGebra
New Resources
第八周作业2
活动三:应用性质
中华人民共和国国旗
盈利與虧蝕
龙形曲线-分形龙2
Discover Resources
Proof of Pythagorean Theorem with Shearing
二次函數係數與圖像的關係
Centres
七角柱(可側轉、上下轉)
線對稱圖形
Discover Topics
Plane Figures or Shapes
Congruence
Surface
Line Segment
Probability